I'v checked my sources a little bit more closely, and this what I have recorded on April 17th losses:

17.04.1940 I./ZG 76 Sola, Take off crash, Bf 110C, 90 %
17.04.1940 III./KGzbv1 Kristiansand, Missing, Ju 52, 100 %
17.04.1940 I./KG 30 Jonsvann, Crash, Ju 88A1, 100 %
17.04.1940 1./106 Sola, Enemy fire (on Ground), He 115 Wnr. 1878 100 %
17.04.1940 1./106 Sola, Enemy fire (on Ground), He 115 Wnr. 1879 100 %
17.04.1940 1./106 Sola, Enemy fire (on Ground), He 115 Wnr. 1898 100 %
17.04.1940 1./106 Sola, Enemy fire (on Ground), He 115 Wnr. 2087 100 %
17.04.1940 2./106 Haugesund, Emergency landing, Do 18 100 %
17.04.1940 1./406 North Sea, Shoot down, Do 18 Wnr. 836 100 %, crew MIA
17.04.1940 KGzbv 102 Schweden, Emergency landing, Ju 52 100 %
17.04.1940 KGzbv 108 Sola See, Flak (friendly), Bv 138 60 %
17.04.1940 ?/108 Bergen, Enemy fire (on Ground), He 59 Wnr. 1834 100%
17.04.1940 KGzbv 108 Sola See, Enemy fire (on Ground), He 59 Wnr. 1898 100%
17.04.1940 KGzbv 108 Sola See, Enemy fire (on Ground), He 59 Wnr. 2796 100 %
17.04.1940 KGzbv 108 Sola See, Enemy fire (on Ground), He 59 100% CORRECT?

Sorry for the confusion in my first posting. Could someone shed some light on the last He 59? It also seems to be confusion on Wnr. 1898, as both He 59 and He 115 are listed with this number. The offical german loss document is of poor quality and very difficult to read. According to Lagebericht (Lw) at OKW, 4 He 59 were lost at Sola-See.

Kjetil